Explore a conference talk that introduces PinchList, an innovative interaction design for smartphones that utilizes pinch gestures to enhance navigation of hierarchical lists. Learn about the challenges of exploring multi-level list items on mobile devices and discover how PinchList addresses these issues through intuitive pinch-out and pinch-in gestures. Delve into the user studies conducted to refine design parameters and evaluate performance compared to traditional touch interfaces. Gain insights into the potential applications of this novel approach for list-based interactions on smartphones. The presentation covers the problem statement, proposed solution, user studies, challenges faced, and concludes with a Q&A session.